<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>操作失败</title>
</head>
<body>
<div style="width: 250px; height: 150px; background-color: rgb(224, 224, 224); font-size: 24px; font-weight: 600; margin: auto;margin-top: 100px;line-height: 150px;text-align: center;">
    操作失败！
</div>
</body>
</html>